Remove dead code.

Author: anthony-tuininga

src/oracledb/errors.py

@@ -330,7 +330,6 @@ def _raise_not_supported(feature: str) -> None:
 ERR_UNEXPECTED_REFUSE = 5005
 ERR_UNEXPECTED_END_OF_DATA = 5006
 ERR_UNEXPECTED_XML_TYPE = 5007
-ERR_TOO_MANY_CURSORS_TO_CLOSE = 5008
 ERR_UNKNOWN_SERVER_PIGGYBACK = 5009
 ERR_UNKNOWN_TRANSACTION_STATE = 5010
 
@@ -692,9 +691,6 @@ def _raise_not_supported(feature: str) -> None:
         "Oracle Database does not support time only variables"
     ),
     ERR_TNS_ENTRY_NOT_FOUND: 'unable to find "{name}" in {file_name}',
-    ERR_TOO_MANY_CURSORS_TO_CLOSE: (
-        "internal error: attempt to close more than {num_cursors} cursors"
-    ),
     ERR_TOO_MANY_BATCH_ERRORS: (
         "the number of batch errors from executemany() exceeds 65535"
     ),

src/oracledb/impl/thin/constants.pxi

@@ -780,7 +780,6 @@ cdef enum:
     TNS_MAX_ROWID_LENGTH = 18
     TNS_DURATION_SESSION = 10
     TNS_MAX_LONG_LENGTH = 0x7fffffff
-    TNS_MAX_CURSORS_TO_CLOSE = 500
     TNS_MAX_CONNECT_DATA = 230
     TNS_MAX_UROWID_LENGTH = 5267
     TNS_SERVER_CONVERTS_CHARS = 0x01

src/oracledb/impl/thin/pool.pyx

@@ -441,9 +441,6 @@ cdef class BaseThinPoolImpl(BasePoolImpl):
 
 cdef class ThinPoolImpl(BaseThinPoolImpl):
 
-    cdef:
-        object _timer_thread
-
     def __init__(self, str dsn, PoolParamsImpl params):
         super().__init__(dsn, params)
         self._condition = threading.Condition()